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Questions and Answers
What is the main difference between the cohesive and adhesive forces of molecules at the surface of a liquid?
What is the main difference between the cohesive and adhesive forces of molecules at the surface of a liquid?
- Cohesive and adhesive forces are the same thing.
- Cohesive forces only develop with molecules of the other phase, while adhesive forces can develop with molecules below and adjacent to them.
- Cohesive forces only develop with molecules below and adjacent to them, while adhesive forces can develop with molecules of the other phase (correct)
- Cohesive and adhesive forces do not exist at the surface of a liquid
What happens to the molecules in the bulk liquid in terms of their attraction to other molecules?
What happens to the molecules in the bulk liquid in terms of their attraction to other molecules?
- They have an equal attraction to other molecules in all directions, which are cohesive forces. (correct)
- They are only attracted to molecules of the same phase
- They are only attracted to molecules of the other phase
- They have no attraction to other molecules.
What is the term used to describe the force that allows a liquid to form a spherical shape?
What is the term used to describe the force that allows a liquid to form a spherical shape?
- Cohesive force
- Bulk liquid force
- Surface tension (correct)
- Adhesive force
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